1 /*
2 * Copyright (c) 2012, 2015, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 #include "precompiled.hpp"
25 #include "asm/codeBuffer.hpp"
26 #include "code/codeCache.hpp"
27 #include "compiler/compileBroker.hpp"
28 #include "compiler/disassembler.hpp"
29 #include "jvmci/jvmciRuntime.hpp"
30 #include "jvmci/jvmciCompilerToVM.hpp"
31 #include "jvmci/jvmciCompiler.hpp"
32 #include "jvmci/jvmciJavaClasses.hpp"
33 #include "jvmci/jvmciEnv.hpp"
34 #include "memory/oopFactory.hpp"
35 #include "oops/oop.inline.hpp"
36 #include "oops/objArrayOop.inline.hpp"
37 #include "prims/jvm.h"
38 #include "runtime/biasedLocking.hpp"
39 #include "runtime/interfaceSupport.hpp"
40 #include "runtime/reflection.hpp"
41 #include "runtime/sharedRuntime.hpp"
42 #include "utilities/debug.hpp"
43 #include "utilities/defaultStream.hpp"
44
45 #if defined(_MSC_VER)
46 #define strtoll _strtoi64
47 #endif
48
49 jobject JVMCIRuntime::_HotSpotJVMCIRuntime_instance = NULL;
50 bool JVMCIRuntime::_HotSpotJVMCIRuntime_initialized = false;
51 const char* JVMCIRuntime::_compiler = NULL;
52 const char* JVMCIRuntime::_options = NULL;
53 bool JVMCIRuntime::_shutdown_called = false;
54
55 void JVMCIRuntime::initialize_natives(JNIEnv *env, jclass c2vmClass) {
56 #ifdef _LP64
57 uintptr_t heap_end = (uintptr_t) Universe::heap()->reserved_region().end();
58 uintptr_t allocation_end = heap_end + ((uintptr_t)16) * 1024 * 1024 * 1024;
59 guarantee(heap_end < allocation_end, "heap end too close to end of address space (might lead to erroneous TLAB allocations)");
60 #else
61 fatal("check TLAB allocation code for address space conflicts");
62 #endif
63
64 JavaThread* THREAD = JavaThread::current();
65 {
66 ThreadToNativeFromVM trans(THREAD);
67
68 ResourceMark rm;
69 HandleMark hm;
70
71 // Ensure _non_oop_bits is initialized
72 Universe::non_oop_word();
73
74 env->RegisterNatives(c2vmClass, CompilerToVM::methods, CompilerToVM::methods_count());
75 }
76 if (HAS_PENDING_EXCEPTION) {
77 abort_on_pending_exception(PENDING_EXCEPTION, "Could not register natives");
78 }
79 }
80
81 BasicType JVMCIRuntime::kindToBasicType(jchar ch) {
82 switch(ch) {
83 case 'z': return T_BOOLEAN;
84 case 'b': return T_BYTE;
85 case 's': return T_SHORT;
86 case 'c': return T_CHAR;
87 case 'i': return T_INT;
88 case 'f': return T_FLOAT;
89 case 'j': return T_LONG;
90 case 'd': return T_DOUBLE;
91 case 'a': return T_OBJECT;
92 case '-': return T_ILLEGAL;
93 default:
94 fatal(err_msg("unexpected Kind: %c", ch));
95 break;
96 }
97 return T_ILLEGAL;
98 }
99
100 // Simple helper to see if the caller of a runtime stub which
101 // entered the VM has been deoptimized
102
103 static bool caller_is_deopted() {
104 JavaThread* thread = JavaThread::current();
105 RegisterMap reg_map(thread, false);
106 frame runtime_frame = thread->last_frame();
107 frame caller_frame = runtime_frame.sender(®_map);
108 assert(caller_frame.is_compiled_frame(), "must be compiled");
109 return caller_frame.is_deoptimized_frame();
110 }
111
112 // Stress deoptimization
113 static void deopt_caller() {
114 if ( !caller_is_deopted()) {
115 JavaThread* thread = JavaThread::current();
116 RegisterMap reg_map(thread, false);
117 frame runtime_frame = thread->last_frame();
118 frame caller_frame = runtime_frame.sender(®_map);
119 Deoptimization::deoptimize_frame(thread, caller_frame.id(), Deoptimization::Reason_constraint);
120 assert(caller_is_deopted(), "Must be deoptimized");
121 }
122 }
123
124 JRT_BLOCK_ENTRY(void, JVMCIRuntime::new_instance(JavaThread* thread, Klass* klass))
125 JRT_BLOCK;
126 assert(klass->is_klass(), "not a class");
127 instanceKlassHandle h(thread, klass);
128 h->check_valid_for_instantiation(true, CHECK);
129 // make sure klass is initialized
130 h->initialize(CHECK);
131 // allocate instance and return via TLS
132 oop obj = h->allocate_instance(CHECK);
133 thread->set_vm_result(obj);
134 JRT_BLOCK_END;
135
136 if (ReduceInitialCardMarks) {
137 new_store_pre_barrier(thread);
138 }
139 JRT_END
140
141 JRT_BLOCK_ENTRY(void, JVMCIRuntime::new_array(JavaThread* thread, Klass* array_klass, jint length))
142 JRT_BLOCK;
143 // Note: no handle for klass needed since they are not used
144 // anymore after new_objArray() and no GC can happen before.
145 // (This may have to change if this code changes!)
146 assert(array_klass->is_klass(), "not a class");
147 oop obj;
148 if (array_klass->oop_is_typeArray()) {
149 BasicType elt_type = TypeArrayKlass::cast(array_klass)->element_type();
150 obj = oopFactory::new_typeArray(elt_type, length, CHECK);
151 } else {
152 Klass* elem_klass = ObjArrayKlass::cast(array_klass)->element_klass();
153 obj = oopFactory::new_objArray(elem_klass, length, CHECK);
154 }
155 thread->set_vm_result(obj);
156 // This is pretty rare but this runtime patch is stressful to deoptimization
157 // if we deoptimize here so force a deopt to stress the path.
158 if (DeoptimizeALot) {
159 static int deopts = 0;
160 // Alternate between deoptimizing and raising an error (which will also cause a deopt)
161 if (deopts++ % 2 == 0) {
162 ResourceMark rm(THREAD);
163 THROW(vmSymbols::java_lang_OutOfMemoryError());
164 } else {
165 deopt_caller();
166 }
167 }
168 JRT_BLOCK_END;
169
170 if (ReduceInitialCardMarks) {
171 new_store_pre_barrier(thread);
172 }
173 JRT_END
174
175 void JVMCIRuntime::new_store_pre_barrier(JavaThread* thread) {
176 // After any safepoint, just before going back to compiled code,
177 // we inform the GC that we will be doing initializing writes to
178 // this object in the future without emitting card-marks, so
179 // GC may take any compensating steps.
180 // NOTE: Keep this code consistent with GraphKit::store_barrier.
181
182 oop new_obj = thread->vm_result();
183 if (new_obj == NULL) return;
184
185 assert(Universe::heap()->can_elide_tlab_store_barriers(),
186 "compiler must check this first");
187 // GC may decide to give back a safer copy of new_obj.
188 new_obj = Universe::heap()->new_store_pre_barrier(thread, new_obj);
189 thread->set_vm_result(new_obj);
190 }
191
192 JRT_ENTRY(void, JVMCIRuntime::new_multi_array(JavaThread* thread, Klass* klass, int rank, jint* dims))
193 assert(klass->is_klass(), "not a class");
194 assert(rank >= 1, "rank must be nonzero");
195 oop obj = ArrayKlass::cast(klass)->multi_allocate(rank, dims, CHECK);
196 thread->set_vm_result(obj);
197 JRT_END
198
199 JRT_ENTRY(void, JVMCIRuntime::dynamic_new_array(JavaThread* thread, oopDesc* element_mirror, jint length))
200 oop obj = Reflection::reflect_new_array(element_mirror, length, CHECK);
201 thread->set_vm_result(obj);
202 JRT_END
203
204 JRT_ENTRY(void, JVMCIRuntime::dynamic_new_instance(JavaThread* thread, oopDesc* type_mirror))
205 instanceKlassHandle klass(THREAD, java_lang_Class::as_Klass(type_mirror));
206
207 if (klass == NULL) {
208 ResourceMark rm(THREAD);
209 THROW(vmSymbols::java_lang_InstantiationException());
210 }
211
212 // Create new instance (the receiver)
213 klass->check_valid_for_instantiation(false, CHECK);
214
215 // Make sure klass gets initialized
216 klass->initialize(CHECK);
217
218 oop obj = klass->allocate_instance(CHECK);
219 thread->set_vm_result(obj);
220 JRT_END
221
222 extern void vm_exit(int code);
223
224 // Enter this method from compiled code handler below. This is where we transition
225 // to VM mode. This is done as a helper routine so that the method called directly
226 // from compiled code does not have to transition to VM. This allows the entry
227 // method to see if the nmethod that we have just looked up a handler for has
228 // been deoptimized while we were in the vm. This simplifies the assembly code
229 // cpu directories.
230 //
231 // We are entering here from exception stub (via the entry method below)
232 // If there is a compiled exception handler in this method, we will continue there;
233 // otherwise we will unwind the stack and continue at the caller of top frame method
234 // Note: we enter in Java using a special JRT wrapper. This wrapper allows us to
235 // control the area where we can allow a safepoint. After we exit the safepoint area we can
236 // check to see if the handler we are going to return is now in a nmethod that has
237 // been deoptimized. If that is the case we return the deopt blob
238 // unpack_with_exception entry instead. This makes life for the exception blob easier
239 // because making that same check and diverting is painful from assembly language.
240 JRT_ENTRY_NO_ASYNC(static address, exception_handler_for_pc_helper(JavaThread* thread, oopDesc* ex, address pc, nmethod*& nm))
241 // Reset method handle flag.
242 thread->set_is_method_handle_return(false);
243
244 Handle exception(thread, ex);
245 nm = CodeCache::find_nmethod(pc);
246 assert(nm != NULL, "this is not a compiled method");
247 // Adjust the pc as needed/
248 if (nm->is_deopt_pc(pc)) {
249 RegisterMap map(thread, false);
250 frame exception_frame = thread->last_frame().sender(&map);
251 // if the frame isn't deopted then pc must not correspond to the caller of last_frame
252 assert(exception_frame.is_deoptimized_frame(), "must be deopted");
253 pc = exception_frame.pc();
254 }
255 #ifdef ASSERT
256 assert(exception.not_null(), "NULL exceptions should be handled by throw_exception");
257 assert(exception->is_oop(), "just checking");
258 // Check that exception is a subclass of Throwable, otherwise we have a VerifyError
259 if (!(exception->is_a(SystemDictionary::Throwable_klass()))) {
260 if (ExitVMOnVerifyError) vm_exit(-1);
261 ShouldNotReachHere();
262 }
263 #endif
264
265 // Check the stack guard pages and reenable them if necessary and there is
266 // enough space on the stack to do so. Use fast exceptions only if the guard
267 // pages are enabled.
268 bool guard_pages_enabled = thread->stack_yellow_zone_enabled();
269 if (!guard_pages_enabled) guard_pages_enabled = thread->reguard_stack();
270
271 if (JvmtiExport::can_post_on_exceptions()) {
272 // To ensure correct notification of exception catches and throws
273 // we have to deoptimize here. If we attempted to notify the
274 // catches and throws during this exception lookup it's possible
275 // we could deoptimize on the way out of the VM and end back in
276 // the interpreter at the throw site. This would result in double
277 // notifications since the interpreter would also notify about
278 // these same catches and throws as it unwound the frame.
279
280 RegisterMap reg_map(thread);
281 frame stub_frame = thread->last_frame();
282 frame caller_frame = stub_frame.sender(®_map);
283
284 // We don't really want to deoptimize the nmethod itself since we
285 // can actually continue in the exception handler ourselves but I
286 // don't see an easy way to have the desired effect.
287 Deoptimization::deoptimize_frame(thread, caller_frame.id(), Deoptimization::Reason_constraint);
288 assert(caller_is_deopted(), "Must be deoptimized");
289
290 return SharedRuntime::deopt_blob()->unpack_with_exception_in_tls();
291 }
292
293 // ExceptionCache is used only for exceptions at call sites and not for implicit exceptions
294 if (guard_pages_enabled) {
295 address fast_continuation = nm->handler_for_exception_and_pc(exception, pc);
296 if (fast_continuation != NULL) {
297 // Set flag if return address is a method handle call site.
298 thread->set_is_method_handle_return(nm->is_method_handle_return(pc));
299 return fast_continuation;
300 }
301 }
302
303 // If the stack guard pages are enabled, check whether there is a handler in
304 // the current method. Otherwise (guard pages disabled), force an unwind and
305 // skip the exception cache update (i.e., just leave continuation==NULL).
306 address continuation = NULL;
307 if (guard_pages_enabled) {
308
309 // New exception handling mechanism can support inlined methods
310 // with exception handlers since the mappings are from PC to PC
311
312 // debugging support
313 // tracing
314 if (TraceExceptions) {
315 ttyLocker ttyl;
316 ResourceMark rm;
317 tty->print_cr("Exception <%s> (" INTPTR_FORMAT ") thrown in compiled method <%s> at PC " INTPTR_FORMAT " for thread " INTPTR_FORMAT "",
318 exception->print_value_string(), p2i((address)exception()), nm->method()->print_value_string(), p2i(pc), p2i(thread));
319 }
320 // for AbortVMOnException flag
321 NOT_PRODUCT(Exceptions::debug_check_abort(exception));
322
323 // Clear out the exception oop and pc since looking up an
324 // exception handler can cause class loading, which might throw an
325 // exception and those fields are expected to be clear during
326 // normal bytecode execution.
327 thread->clear_exception_oop_and_pc();
328
329 continuation = SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, false, false);
330 // If an exception was thrown during exception dispatch, the exception oop may have changed
331 thread->set_exception_oop(exception());
332 thread->set_exception_pc(pc);
333
334 // the exception cache is used only by non-implicit exceptions
335 if (continuation != NULL && !SharedRuntime::deopt_blob()->contains(continuation)) {
336 nm->add_handler_for_exception_and_pc(exception, pc, continuation);
337 }
338 }
339
340 // Set flag if return address is a method handle call site.
341 thread->set_is_method_handle_return(nm->is_method_handle_return(pc));
342
343 if (TraceExceptions) {
344 ttyLocker ttyl;
345 ResourceMark rm;
346 tty->print_cr("Thread " PTR_FORMAT " continuing at PC " PTR_FORMAT " for exception thrown at PC " PTR_FORMAT,
347 p2i(thread), p2i(continuation), p2i(pc));
348 }
349
350 return continuation;
351 JRT_END
352
353 // Enter this method from compiled code only if there is a Java exception handler
354 // in the method handling the exception.
355 // We are entering here from exception stub. We don't do a normal VM transition here.
356 // We do it in a helper. This is so we can check to see if the nmethod we have just
357 // searched for an exception handler has been deoptimized in the meantime.
358 address JVMCIRuntime::exception_handler_for_pc(JavaThread* thread) {
359 oop exception = thread->exception_oop();
360 address pc = thread->exception_pc();
361 // Still in Java mode
362 DEBUG_ONLY(ResetNoHandleMark rnhm);
363 nmethod* nm = NULL;
364 address continuation = NULL;
365 {
366 // Enter VM mode by calling the helper
367 ResetNoHandleMark rnhm;
368 continuation = exception_handler_for_pc_helper(thread, exception, pc, nm);
369 }
370 // Back in JAVA, use no oops DON'T safepoint
371
372 // Now check to see if the compiled method we were called from is now deoptimized.
373 // If so we must return to the deopt blob and deoptimize the nmethod
374 if (nm != NULL && caller_is_deopted()) {
375 continuation = SharedRuntime::deopt_blob()->unpack_with_exception_in_tls();
376 }
377
378 assert(continuation != NULL, "no handler found");
379 return continuation;
380 }
381
382 JRT_ENTRY(void, JVMCIRuntime::create_null_exception(JavaThread* thread))
383 SharedRuntime::throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_NullPointerException());
384 thread->set_vm_result(PENDING_EXCEPTION);
385 CLEAR_PENDING_EXCEPTION;
386 JRT_END
387
388 JRT_ENTRY(void, JVMCIRuntime::create_out_of_bounds_exception(JavaThread* thread, jint index))
389 char message[jintAsStringSize];
390 sprintf(message, "%d", index);
391 SharedRuntime::throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), message);
392 thread->set_vm_result(PENDING_EXCEPTION);
393 CLEAR_PENDING_EXCEPTION;
394 JRT_END
395
396 JRT_ENTRY_NO_ASYNC(void, JVMCIRuntime::monitorenter(JavaThread* thread, oopDesc* obj, BasicLock* lock))
397 IF_TRACE_jvmci_3 {
398 char type[O_BUFLEN];
399 obj->klass()->name()->as_C_string(type, O_BUFLEN);
400 markOop mark = obj->mark();
401 TRACE_jvmci_3("%s: entered locking slow case with obj=" INTPTR_FORMAT ", type=%s, mark=" INTPTR_FORMAT ", lock=" INTPTR_FORMAT, thread->name(), p2i(obj), type, p2i(mark), p2i(lock));
402 tty->flush();
403 }
404 #ifdef ASSERT
405 if (PrintBiasedLockingStatistics) {
406 Atomic::inc(BiasedLocking::slow_path_entry_count_addr());
407 }
408 #endif
409 Handle h_obj(thread, obj);
410 assert(h_obj()->is_oop(), "must be NULL or an object");
411 if (UseBiasedLocking) {
412 // Retry fast entry if bias is revoked to avoid unnecessary inflation
413 ObjectSynchronizer::fast_enter(h_obj, lock, true, CHECK);
414 } else {
415 if (JVMCIUseFastLocking) {
416 // When using fast locking, the compiled code has already tried the fast case
417 ObjectSynchronizer::slow_enter(h_obj, lock, THREAD);
418 } else {
419 ObjectSynchronizer::fast_enter(h_obj, lock, false, THREAD);
420 }
421 }
422 TRACE_jvmci_3("%s: exiting locking slow with obj=" INTPTR_FORMAT, thread->name(), p2i(obj));
423 JRT_END
424
425 JRT_LEAF(void, JVMCIRuntime::monitorexit(JavaThread* thread, oopDesc* obj, BasicLock* lock))
426 assert(thread == JavaThread::current(), "threads must correspond");
427 assert(thread->last_Java_sp(), "last_Java_sp must be set");
428 // monitorexit is non-blocking (leaf routine) => no exceptions can be thrown
429 EXCEPTION_MARK;
430
431 #ifdef DEBUG
432 if (!obj->is_oop()) {
433 ResetNoHandleMark rhm;
434 nmethod* method = thread->last_frame().cb()->as_nmethod_or_null();
435 if (method != NULL) {
436 tty->print_cr("ERROR in monitorexit in method %s wrong obj " INTPTR_FORMAT, method->name(), p2i(obj));
437 }
438 thread->print_stack_on(tty);
439 assert(false, "invalid lock object pointer dected");
440 }
441 #endif
442
443 if (JVMCIUseFastLocking) {
444 // When using fast locking, the compiled code has already tried the fast case
445 ObjectSynchronizer::slow_exit(obj, lock, THREAD);
446 } else {
447 ObjectSynchronizer::fast_exit(obj, lock, THREAD);
448 }
449 IF_TRACE_jvmci_3 {
450 char type[O_BUFLEN];
451 obj->klass()->name()->as_C_string(type, O_BUFLEN);
452 TRACE_jvmci_3("%s: exited locking slow case with obj=" INTPTR_FORMAT ", type=%s, mark=" INTPTR_FORMAT ", lock=" INTPTR_FORMAT, thread->name(), p2i(obj), type, p2i(obj->mark()), p2i(lock));
453 tty->flush();
454 }
455 JRT_END
456
457 JRT_LEAF(void, JVMCIRuntime::log_object(JavaThread* thread, oopDesc* obj, jint flags))
458 bool string = mask_bits_are_true(flags, LOG_OBJECT_STRING);
459 bool addr = mask_bits_are_true(flags, LOG_OBJECT_ADDRESS);
460 bool newline = mask_bits_are_true(flags, LOG_OBJECT_NEWLINE);
461 if (!string) {
462 if (!addr && obj->is_oop_or_null(true)) {
463 char buf[O_BUFLEN];
464 tty->print("%s@" INTPTR_FORMAT, obj->klass()->name()->as_C_string(buf, O_BUFLEN), p2i(obj));
465 } else {
466 tty->print(INTPTR_FORMAT, p2i(obj));
467 }
468 } else {
469 ResourceMark rm;
470 assert(obj != NULL && java_lang_String::is_instance(obj), "must be");
471 char *buf = java_lang_String::as_utf8_string(obj);
472 tty->print_raw(buf);
473 }
474 if (newline) {
475 tty->cr();
476 }
477 JRT_END
478
479 JRT_LEAF(void, JVMCIRuntime::write_barrier_pre(JavaThread* thread, oopDesc* obj))
480 thread->satb_mark_queue().enqueue(obj);
481 JRT_END
482
483 JRT_LEAF(void, JVMCIRuntime::write_barrier_post(JavaThread* thread, void* card_addr))
484 thread->dirty_card_queue().enqueue(card_addr);
485 JRT_END
486
487 JRT_LEAF(jboolean, JVMCIRuntime::validate_object(JavaThread* thread, oopDesc* parent, oopDesc* child))
488 bool ret = true;
489 if(!Universe::heap()->is_in_closed_subset(parent)) {
490 tty->print_cr("Parent Object " INTPTR_FORMAT " not in heap", p2i(parent));
491 parent->print();
492 ret=false;
493 }
494 if(!Universe::heap()->is_in_closed_subset(child)) {
495 tty->print_cr("Child Object " INTPTR_FORMAT " not in heap", p2i(child));
496 child->print();
497 ret=false;
498 }
499 return (jint)ret;
500 JRT_END
501
502 JRT_ENTRY(void, JVMCIRuntime::vm_error(JavaThread* thread, jlong where, jlong format, jlong value))
503 ResourceMark rm;
504 const char *error_msg = where == 0L ? "<internal JVMCI error>" : (char*) (address) where;
505 char *detail_msg = NULL;
506 if (format != 0L) {
507 const char* buf = (char*) (address) format;
508 size_t detail_msg_length = strlen(buf) * 2;
509 detail_msg = (char *) NEW_RESOURCE_ARRAY(u_char, detail_msg_length);
510 jio_snprintf(detail_msg, detail_msg_length, buf, value);
511 }
512 report_vm_error(__FILE__, __LINE__, error_msg, detail_msg);
513 JRT_END
514
515 JRT_LEAF(oopDesc*, JVMCIRuntime::load_and_clear_exception(JavaThread* thread))
516 oop exception = thread->exception_oop();
517 assert(exception != NULL, "npe");
518 thread->set_exception_oop(NULL);
519 thread->set_exception_pc(0);
520 return exception;
521 JRT_END
522
523 PRAGMA_DIAG_PUSH
524 PRAGMA_FORMAT_NONLITERAL_IGNORED
525 JRT_LEAF(void, JVMCIRuntime::log_printf(JavaThread* thread, oopDesc* format, jlong v1, jlong v2, jlong v3))
526 ResourceMark rm;
527 assert(format != NULL && java_lang_String::is_instance(format), "must be");
528 char *buf = java_lang_String::as_utf8_string(format);
529 tty->print((const char*)buf, v1, v2, v3);
530 JRT_END
531 PRAGMA_DIAG_POP
532
533 static void decipher(jlong v, bool ignoreZero) {
534 if (v != 0 || !ignoreZero) {
535 void* p = (void *)(address) v;
536 CodeBlob* cb = CodeCache::find_blob(p);
537 if (cb) {
538 if (cb->is_nmethod()) {
539 char buf[O_BUFLEN];
540 tty->print("%s [" INTPTR_FORMAT "+" JLONG_FORMAT "]", cb->as_nmethod_or_null()->method()->name_and_sig_as_C_string(buf, O_BUFLEN), p2i(cb->code_begin()), (jlong)((address)v - cb->code_begin()));
541 return;
542 }
543 cb->print_value_on(tty);
544 return;
545 }
546 if (Universe::heap()->is_in(p)) {
547 oop obj = oop(p);
548 obj->print_value_on(tty);
549 return;
550 }
551 tty->print(INTPTR_FORMAT " [long: " JLONG_FORMAT ", double %lf, char %c]",p2i((void *)v), (jlong)v, (jdouble)v, (char)v);
552 }
553 }
554
555 PRAGMA_DIAG_PUSH
556 PRAGMA_FORMAT_NONLITERAL_IGNORED
557 JRT_LEAF(void, JVMCIRuntime::vm_message(jboolean vmError, jlong format, jlong v1, jlong v2, jlong v3))
558 ResourceMark rm;
559 const char *buf = (const char*) (address) format;
560 if (vmError) {
561 if (buf != NULL) {
562 fatal(err_msg(buf, v1, v2, v3));
563 } else {
564 fatal("<anonymous error>");
565 }
566 } else if (buf != NULL) {
567 tty->print(buf, v1, v2, v3);
568 } else {
569 assert(v2 == 0, "v2 != 0");
570 assert(v3 == 0, "v3 != 0");
571 decipher(v1, false);
572 }
573 JRT_END
574 PRAGMA_DIAG_POP
575
576 JRT_LEAF(void, JVMCIRuntime::log_primitive(JavaThread* thread, jchar typeChar, jlong value, jboolean newline))
577 union {
578 jlong l;
579 jdouble d;
580 jfloat f;
581 } uu;
582 uu.l = value;
583 switch (typeChar) {
584 case 'z': tty->print(value == 0 ? "false" : "true"); break;
585 case 'b': tty->print("%d", (jbyte) value); break;
586 case 'c': tty->print("%c", (jchar) value); break;
587 case 's': tty->print("%d", (jshort) value); break;
588 case 'i': tty->print("%d", (jint) value); break;
589 case 'f': tty->print("%f", uu.f); break;
590 case 'j': tty->print(JLONG_FORMAT, value); break;
591 case 'd': tty->print("%lf", uu.d); break;
592 default: assert(false, "unknown typeChar"); break;
593 }
594 if (newline) {
595 tty->cr();
596 }
597 JRT_END
598
599 JRT_ENTRY(jint, JVMCIRuntime::identity_hash_code(JavaThread* thread, oopDesc* obj))
600 return (jint) obj->identity_hash();
601 JRT_END
602
603 JRT_ENTRY(jboolean, JVMCIRuntime::thread_is_interrupted(JavaThread* thread, oopDesc* receiver, jboolean clear_interrupted))
604 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate.
605 // This locking requires thread_in_vm which is why this method cannot be JRT_LEAF.
606 Handle receiverHandle(thread, receiver);
607 MutexLockerEx ml(thread->threadObj() == (void*)receiver ? NULL : Threads_lock);
608 JavaThread* receiverThread = java_lang_Thread::thread(receiverHandle());
609 if (receiverThread == NULL) {
610 // The other thread may exit during this process, which is ok so return false.
611 return JNI_FALSE;
612 } else {
613 return (jint) Thread::is_interrupted(receiverThread, clear_interrupted != 0);
614 }
615 JRT_END
616
617 JRT_ENTRY(jint, JVMCIRuntime::test_deoptimize_call_int(JavaThread* thread, int value))
618 deopt_caller();
619 return value;
620 JRT_END
621
622 // private static JVMCIRuntime JVMCI.initializeRuntime()
623 JVM_ENTRY(jobject, JVM_GetJVMCIRuntime(JNIEnv *env, jclass c))
624 if (!EnableJVMCI) {
625 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVMCI is not enabled")
626 }
627 JVMCIRuntime::initialize_HotSpotJVMCIRuntime(CHECK_NULL);
628 return JVMCIRuntime::get_HotSpotJVMCIRuntime_jobject(CHECK_NULL);
629 JVM_END
630
631 Handle JVMCIRuntime::callStatic(const char* className, const char* methodName, const char* signature, JavaCallArguments* args, TRAPS) {
632 guarantee(!_HotSpotJVMCIRuntime_initialized, "cannot reinitialize HotSpotJVMCIRuntime");
633
634 TempNewSymbol name = SymbolTable::new_symbol(className, CHECK_(Handle()));
635 KlassHandle klass = SystemDictionary::resolve_or_fail(name, true, CHECK_(Handle()));
636 TempNewSymbol runtime = SymbolTable::new_symbol(methodName, CHECK_(Handle()));
637 TempNewSymbol sig = SymbolTable::new_symbol(signature, CHECK_(Handle()));
638 JavaValue result(T_OBJECT);
639 if (args == NULL) {
640 JavaCalls::call_static(&result, klass, runtime, sig, CHECK_(Handle()));
641 } else {
642 JavaCalls::call_static(&result, klass, runtime, sig, args, CHECK_(Handle()));
643 }
644 return Handle((oop)result.get_jobject());
645 }
646
647 static bool jvmci_options_file_exists() {
648 const char* home = Arguments::get_java_home();
649 size_t path_len = strlen(home) + strlen("/lib/jvmci/options") + 1;
650 char path[JVM_MAXPATHLEN];
651 char sep = os::file_separator()[0];
652 jio_snprintf(path, JVM_MAXPATHLEN, "%s%clib%cjvmci%coptions", home, sep, sep, sep);
653 struct stat st;
654 return os::stat(path, &st) == 0;
655 }
656
657 void JVMCIRuntime::initialize_HotSpotJVMCIRuntime(TRAPS) {
658 if (JNIHandles::resolve(_HotSpotJVMCIRuntime_instance) == NULL) {
659 #ifdef ASSERT
660 // This should only be called in the context of the JVMCI class being initialized
661 TempNewSymbol name = SymbolTable::new_symbol("jdk/internal/jvmci/runtime/JVMCI", CHECK);
662 Klass* k = SystemDictionary::resolve_or_null(name, CHECK);
663 instanceKlassHandle klass = InstanceKlass::cast(k);
664 assert(klass->is_being_initialized() && klass->is_reentrant_initialization(THREAD),
665 "HotSpotJVMCIRuntime initialization should only be triggered through JVMCI initialization");
666 #endif
667
668 bool parseOptionsFile = jvmci_options_file_exists();
669 if (_options != NULL || parseOptionsFile) {
670 JavaCallArguments args;
671 oop options = java_lang_String::create_oop_from_str(_options, CHECK);
672 args.push_oop(options);
673 args.push_int(parseOptionsFile);
674 callStatic("jdk/internal/jvmci/options/OptionsParser",
675 "parseOptionsFromVM",
676 "(Ljava/lang/String;Z)Ljava/lang/Boolean;", &args, CHECK);
677 }
678
679 if (_compiler != NULL) {
680 JavaCallArguments args;
681 oop compiler = java_lang_String::create_oop_from_str(_compiler, CHECK);
682 args.push_oop(compiler);
683 callStatic("jdk/internal/jvmci/hotspot/HotSpotJVMCICompilerConfig",
684 "selectCompiler",
685 "(Ljava/lang/String;)Ljava/lang/Boolean;", &args, CHECK);
686 }
687
688 Handle result = callStatic("jdk/internal/jvmci/hotspot/HotSpotJVMCIRuntime",
689 "runtime",
690 "()Ljdk/internal/jvmci/hotspot/HotSpotJVMCIRuntime;", NULL, CHECK);
691 _HotSpotJVMCIRuntime_initialized = true;
692 _HotSpotJVMCIRuntime_instance = JNIHandles::make_global(result());
693 }
694 }
695
696 void JVMCIRuntime::initialize_JVMCI(TRAPS) {
697 if (JNIHandles::resolve(_HotSpotJVMCIRuntime_instance) == NULL) {
698 callStatic("jdk/internal/jvmci/runtime/JVMCI",
699 "getRuntime",
700 "()Ljdk/internal/jvmci/runtime/JVMCIRuntime;", NULL, CHECK);
701 }
702 assert(_HotSpotJVMCIRuntime_initialized == true, "what?");
703 }
704
705 void JVMCIRuntime::metadata_do(void f(Metadata*)) {
706 // For simplicity, the existence of HotSpotJVMCIMetaAccessContext in
707 // the SystemDictionary well known classes should ensure the other
708 // classes have already been loaded, so make sure their order in the
709 // table enforces that.
710 assert(SystemDictionary::WK_KLASS_ENUM_NAME(jdk_internal_jvmci_hotspot_HotSpotResolvedJavaMethodImpl) <
711 SystemDictionary::WK_KLASS_ENUM_NAME(jdk_internal_jvmci_hotspot_HotSpotJVMCIMetaAccessContext), "must be loaded earlier");
712 assert(SystemDictionary::WK_KLASS_ENUM_NAME(jdk_internal_jvmci_hotspot_HotSpotConstantPool) <
713 SystemDictionary::WK_KLASS_ENUM_NAME(jdk_internal_jvmci_hotspot_HotSpotJVMCIMetaAccessContext), "must be loaded earlier");
714 assert(SystemDictionary::WK_KLASS_ENUM_NAME(jdk_internal_jvmci_hotspot_HotSpotResolvedObjectTypeImpl) <
715 SystemDictionary::WK_KLASS_ENUM_NAME(jdk_internal_jvmci_hotspot_HotSpotJVMCIMetaAccessContext), "must be loaded earlier");
716
717 if (HotSpotJVMCIMetaAccessContext::klass() == NULL ||
718 !HotSpotJVMCIMetaAccessContext::klass()->is_linked()) {
719 // Nothing could be registered yet
720 return;
721 }
722
723 // WeakReference<HotSpotJVMCIMetaAccessContext>[]
724 objArrayOop allContexts = HotSpotJVMCIMetaAccessContext::allContexts();
725 if (allContexts == NULL) {
726 return;
727 }
728
729 // These must be loaded at this point but the linking state doesn't matter.
730 assert(SystemDictionary::HotSpotResolvedJavaMethodImpl_klass() != NULL, "must be loaded");
731 assert(SystemDictionary::HotSpotConstantPool_klass() != NULL, "must be loaded");
732 assert(SystemDictionary::HotSpotResolvedObjectTypeImpl_klass() != NULL, "must be loaded");
733
734 for (int i = 0; i < allContexts->length(); i++) {
735 oop ref = allContexts->obj_at(i);
736 if (ref != NULL) {
737 oop referent = java_lang_ref_Reference::referent(ref);
738 if (referent != NULL) {
739 // Chunked Object[] with last element pointing to next chunk
740 objArrayOop metadataRoots = HotSpotJVMCIMetaAccessContext::metadataRoots(referent);
741 while (metadataRoots != NULL) {
742 for (int typeIndex = 0; typeIndex < metadataRoots->length() - 1; typeIndex++) {
743 oop reference = metadataRoots->obj_at(typeIndex);
744 if (reference == NULL) {
745 continue;
746 }
747 oop metadataRoot = java_lang_ref_Reference::referent(reference);
748 if (metadataRoot == NULL) {
749 continue;
750 }
751 if (metadataRoot->is_a(SystemDictionary::HotSpotResolvedJavaMethodImpl_klass())) {
752 Method* method = CompilerToVM::asMethod(metadataRoot);
753 f(method);
754 } else if (metadataRoot->is_a(SystemDictionary::HotSpotConstantPool_klass())) {
755 ConstantPool* constantPool = CompilerToVM::asConstantPool(metadataRoot);
756 f(constantPool);
757 } else if (metadataRoot->is_a(SystemDictionary::HotSpotResolvedObjectTypeImpl_klass())) {
758 Klass* klass = CompilerToVM::asKlass(metadataRoot);
759 f(klass);
760 } else {
761 metadataRoot->print();
762 ShouldNotReachHere();
763 }
764 }
765 metadataRoots = (objArrayOop)metadataRoots->obj_at(metadataRoots->length() - 1);
766 assert(metadataRoots == NULL || metadataRoots->is_objArray(), "wrong type");
767 }
768 }
769 }
770 }
771 }
772
773 // private static void CompilerToVM.init()
774 JVM_ENTRY(void, JVM_InitializeJVMCINatives(JNIEnv *env, jclass c2vmClass))
775 JVMCIRuntime::initialize_natives(env, c2vmClass);
776 JVM_END
777
778 /**
779 * Closure for parsing a line from a *.properties file in jre/lib/jvmci/properties.
780 * The line must match the regular expression "[^=]+=.*". That is one or more
781 * characters other than '=' followed by '=' followed by zero or more characters.
782 * Everything before the '=' is the property name and everything after '=' is the value.
783 * Lines that start with '#' are treated as comments and ignored.
784 * No special processing of whitespace or any escape characters is performed.
785 * The last definition of a property "wins" (i.e., it overrides all earlier
786 * definitions of the property).
787 */
788 class JVMCIPropertiesFileClosure : public ParseClosure {
789 SystemProperty** _plist;
790 public:
791 JVMCIPropertiesFileClosure(SystemProperty** plist) : _plist(plist) {}
792 void do_line(char* line) {
793 if (line[0] == '#') {
794 // skip comment
795 return;
796 }
797 size_t len = strlen(line);
798 char* sep = strchr(line, '=');
799 if (sep == NULL) {
800 warn_and_abort("invalid format: could not find '=' character");
801 return;
802 }
803 if (sep == line) {
804 warn_and_abort("invalid format: name cannot be empty");
805 return;
806 }
807 *sep = '\0';
808 const char* name = line;
809 char* value = sep + 1;
810 Arguments::PropertyList_unique_add(_plist, name, value);
811 }
812 };
813
814 void JVMCIRuntime::parse_properties(SystemProperty** plist) {
815 char jvmciDir[JVM_MAXPATHLEN];
816 const char* fileSep = os::file_separator();
817 jio_snprintf(jvmciDir, sizeof(jvmciDir), "%s%slib%sjvmci",
818 Arguments::get_java_home(), fileSep, fileSep, fileSep);
819 DIR* dir = os::opendir(jvmciDir);
820 if (dir != NULL) {
821 struct dirent *entry;
822 char *dbuf = NEW_C_HEAP_ARRAY(char, os::readdir_buf_size(jvmciDir), mtInternal);
823 JVMCIPropertiesFileClosure closure(plist);
824 const unsigned suffix_len = (unsigned)strlen(".properties");
825 while ((entry = os::readdir(dir, (dirent *) dbuf)) != NULL && !closure.is_aborted()) {
826 const char* name = entry->d_name;
827 if (strlen(name) > suffix_len && strcmp(name + strlen(name) - suffix_len, ".properties") == 0) {
828 char propertiesFilePath[JVM_MAXPATHLEN];
829 jio_snprintf(propertiesFilePath, sizeof(propertiesFilePath), "%s%s%s",jvmciDir, fileSep, name);
830 JVMCIRuntime::parse_lines(propertiesFilePath, &closure, false);
831 }
832 }
833 FREE_C_HEAP_ARRAY(char, dbuf);
834 os::closedir(dir);
835 }
836 }
837
838 #define CHECK_WARN_ABORT_(message) THREAD); \
839 if (HAS_PENDING_EXCEPTION) { \
840 warning(message); \
841 char buf[512]; \
842 jio_snprintf(buf, 512, "Uncaught exception at %s:%d", __FILE__, __LINE__); \
843 JVMCIRuntime::abort_on_pending_exception(PENDING_EXCEPTION, buf); \
844 return; \
845 } \
846 (void)(0
847
848 void JVMCIRuntime::save_compiler(const char* compiler) {
849 assert(compiler != NULL, "npe");
850 assert(_compiler == NULL, "cannot reassign JVMCI compiler");
851 _compiler = compiler;
852 }
853
854 void JVMCIRuntime::save_options(const char* options) {
855 assert(options != NULL, "npe");
856 assert(_options == NULL, "cannot reassign JVMCI options");
857 _options = options;
858 }
859
860 void JVMCIRuntime::shutdown() {
861 if (_HotSpotJVMCIRuntime_instance != NULL) {
862 _shutdown_called = true;
863 JavaThread* THREAD = JavaThread::current();
864 HandleMark hm(THREAD);
865 Handle receiver = get_HotSpotJVMCIRuntime(CHECK_ABORT);
866 JavaValue result(T_VOID);
867 JavaCallArguments args;
868 args.push_oop(receiver);
869 JavaCalls::call_special(&result, receiver->klass(), vmSymbols::shutdown_method_name(), vmSymbols::void_method_signature(), &args, CHECK_ABORT);
870 }
871 }
872
873 void JVMCIRuntime::call_printStackTrace(Handle exception, Thread* thread) {
874 assert(exception->is_a(SystemDictionary::Throwable_klass()), "Throwable instance expected");
875 JavaValue result(T_VOID);
876 JavaCalls::call_virtual(&result,
877 exception,
878 KlassHandle(thread,
879 SystemDictionary::Throwable_klass()),
880 vmSymbols::printStackTrace_name(),
881 vmSymbols::void_method_signature(),
882 thread);
883 }
884
885 void JVMCIRuntime::abort_on_pending_exception(Handle exception, const char* message, bool dump_core) {
886 Thread* THREAD = Thread::current();
887 CLEAR_PENDING_EXCEPTION;
888 tty->print_raw_cr(message);
889 call_printStackTrace(exception, THREAD);
890
891 // Give other aborting threads to also print their stack traces.
892 // This can be very useful when debugging class initialization
893 // failures.
894 os::sleep(THREAD, 200, false);
895
896 vm_abort(dump_core);
897 }
898
899 void JVMCIRuntime::parse_lines(char* path, ParseClosure* closure, bool warnStatFailure) {
900 struct stat st;
901 if (os::stat(path, &st) == 0 && (st.st_mode & S_IFREG) == S_IFREG) { // exists & is regular file
902 int file_handle = os::open(path, 0, 0);
903 if (file_handle != -1) {
904 char* buffer = NEW_C_HEAP_ARRAY(char, st.st_size + 1, mtInternal);
905 int num_read;
906 num_read = (int) os::read(file_handle, (char*) buffer, st.st_size);
907 if (num_read == -1) {
908 warning("Error reading file %s due to %s", path, strerror(errno));
909 } else if (num_read != st.st_size) {
910 warning("Only read %d of " SIZE_FORMAT " bytes from %s", num_read, (size_t) st.st_size, path);
911 }
912 os::close(file_handle);
913 closure->set_filename(path);
914 if (num_read == st.st_size) {
915 buffer[num_read] = '\0';
916
917 char* line = buffer;
918 while (line - buffer < num_read && !closure->is_aborted()) {
919 // find line end (\r, \n or \r\n)
920 char* nextline = NULL;
921 char* cr = strchr(line, '\r');
922 char* lf = strchr(line, '\n');
923 if (cr != NULL && lf != NULL) {
924 char* min = MIN2(cr, lf);
925 *min = '\0';
926 if (lf == cr + 1) {
927 nextline = lf + 1;
928 } else {
929 nextline = min + 1;
930 }
931 } else if (cr != NULL) {
932 *cr = '\0';
933 nextline = cr + 1;
934 } else if (lf != NULL) {
935 *lf = '\0';
936 nextline = lf + 1;
937 }
938 // trim left
939 while (*line == ' ' || *line == '\t') line++;
940 char* end = line + strlen(line);
941 // trim right
942 while (end > line && (*(end -1) == ' ' || *(end -1) == '\t')) end--;
943 *end = '\0';
944 // skip comments and empty lines
945 if (*line != '#' && strlen(line) > 0) {
946 closure->parse_line(line);
947 }
948 if (nextline != NULL) {
949 line = nextline;
950 } else {
951 // File without newline at the end
952 break;
953 }
954 }
955 }
956 FREE_C_HEAP_ARRAY(char, buffer);
957 } else {
958 warning("Error opening file %s due to %s", path, strerror(errno));
959 }
960 } else if (warnStatFailure) {
961 warning("Could not stat file %s due to %s", path, strerror(errno));
962 }
963 }